Logitech Multimedia Speakers Z213 (2.1 Stereo Speakers with Subwoofer) Satellite RMS Power /ea: 2 x 1.5 Watts Subwoofer RMS Power: 4 Watts Frequency Response: 65Hz - 20KHz Part Number: 980-000941 Color: Black Impedance: 4 Ohms Remote: Wired Dimension: Satellites: 5.60 x 3.10 x 3.00 Subwoofer: 7.20 x 5.10 x 7.60